US5042235A - System for shrink-wrapping palletized goods - Google Patents
System for shrink-wrapping palletized goods Download PDFInfo
- Publication number
- US5042235A US5042235A US07/454,774 US45477489A US5042235A US 5042235 A US5042235 A US 5042235A US 45477489 A US45477489 A US 45477489A US 5042235 A US5042235 A US 5042235A
- Authority
- US
- United States
- Prior art keywords
- stack
- foil
- pallet
- hood
- lower edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
- B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
Definitions
- the present invention relates to the packaging of goods on a pallet. More particularly this invention concerns a method of and apparatus for shrink-wrapping palletized goods.
- hood In a standard prior-art system the hood is gripped at its edge and pulled down over the stack by grippers carried on an annular frame that is vertically displaceable at the wrapping station. Once the hood is in place its edge is released and heater/blowers on the frame are activated as the frame is raised to shrink the wrap and in fact to weld it to the outer edge of the lower foil on which the stack sits, thereby also securing the palletized stack to the pallet.
- heater/blowers on the frame are activated as the frame is raised to shrink the wrap and in fact to weld it to the outer edge of the lower foil on which the stack sits, thereby also securing the palletized stack to the pallet.
- Such an arrangement can trap air in the package and form bubbles as the air is heated. These bubbles do not always recede completely when the package subsequently cools. In addition diagonal folds frequently form at the corners of the package so that the resin of the shrink wrap is insufficiently heated where it is doubled over.
- European patent application 205,135 describes a system which avoids some of these problems by holding the bottom edge of the hood out away from the package and by applying the heat from top to bottom while air is aspirated from beneath the package, an effect achieved by releasing the bottom edge of the upper hood foil, raising the frame to its uppermost position, and then activating the heater/blowers as the frame is once again lowered.
- This system does indeed avoid the formation of bubbles. Nonetheless the upper hood foil frequently shrinks such that it pulls up away from the pallet so that by the time the heater/blowers are in their lowermost position the lower edge of the upper foil is spaced above the lower foil and can no longer be welded to it.
- Another object is the provision of such an improved method of and apparatus for shrinking a stack of goods on a pallet which overcomes the above-given disadvantages, that is which completely avoids the formation of bubbles in the wrap while still ensuring complete encasing of the stack being packaged.
- goods are packaged by first placing a thermoplastic lower foil atop a pallet with edges of the foil projecting laterally past the pallet and then stacking goods on the pallet atop the foil on the pallet within the edges of the foil.
- the lower edge of a downwardly open heat-shrinkable foil hood is held as the hood is fitted downward over the stack on the pallet until the lower edge is generally below the stack.
- This lower edge is then gripped below the stack and the foil hood is shrunk from top to bottom around the stack while continuing to grip the lower edge below the stack.
- Finally the foil hood is welded to the outer edge of the lower foil.
- the grippers are carried on the same vertically displaceable frame as the heater/blowers it is possible for the grippers to release and move upward before the top-to-bottom shrinking of the hood. During such shrinking the clamps will prevent the hood or sack from riding up too much.
- the lower edge is gripped by being pinched against abutments below the pallet.
- the abutments are constituted as stationary longitudinally extending rails that flank the packaging station.
- the pallet itself normally has transversely extending leading and trailing beams having leading and trailing faces constituting the abutments against which the respective portions of the lower edge are clamped.
- the lower edge of the foil hood is welded according to this invention to the outer edge of the lower foil below the stack in a skirt that is shrunk-fit around the pallet. This makes for a very solid package which, when opened, will allow the goods to be readily separated from the pallet.
- the abutments and the clamps according to this invention lie below a plane defined by an upper surface of the pallet.
- These clamps are constituted as L-shaped clamp arms pivoted about horizontal axes parallel to the respective sides of the normally parallepipedal stack and pallet.
- a blower having an intake open upward underneath the support surface and downwardly opening output for aspirating air from underneath the hood.
- FIG. 1 is an end view of the stacking system of this invention
- FIG. 2 is a large-scale view of a detail of FIG. 1;
- FIG. 3 is a side view of the stacking system.
- a packaging station 1 holds a pallet 2 carrying a stack 3 of goods to be packaged.
- a thermoplastic foil 4 lies atop the pallet 2 underneath the stack 3 and has its outer edge projecting out from beneath the stack 3 and, to start with, hanging down like a skirt around the pallet 2.
- thermoplastic and shrinkable synthetic-resin sack or hood 5 is fitted down over the stack 3. This is done by grasping its lower edge with a plurality of grippers 6 carried by unillustrated connections on a vertically displaceable frame 15 and engaging this lower edge at a plurality of location spaced around the stack 3.
- the hood 5 is pulled down over the stack 3 until its lower edge hangs all the way down past the pallet and, in fact, past a support surface S formed by conveyor chains 14 supporting the pallet 2.
- the support surface S is transversely flanked by longitudinally extending angle-iron abutments 9 that lie wholly below the stack 3 and also below the entire foil 4 and that define longitudinally extending and vertical surfaces 10 against which L-shaped pivotal clamp arms 11 can press the lower edge of the hood 5. Similar such arms projecting up between the chains 14 can press the transversely extending leading and trailing portions of the lower edge of the hood against abutments formed by the transversely extending beams 12 of the pallet.
- the clamps 11 are offset from the grippers 6 so that the lower edge of the hood 5 can be clamped against the abutments 10 and 12 before it is released by these grippers 6.
- the frame 15 also carries standard blower/heater units 7 and an exhaust fan 13 has a downwardly open output and an intake connected to a box 8 formed underneath the surface S and provided with intake slots under this surface S for drawing off air driven out of the hood 5.
- the hood 5 is fitted dow around the stack 3 and its lower edge is clamped in place.
- the grippers 6 are then released and the frame 15 moves to a position at the top of the stack 3 whereupon the heater/blowers 7 are activated and this frame 15 is lowered.
- the sack-like hood 5 is shrunk tightly around the stack and, when the heater/blowers 7 come level with the lower end of the stack, the hood 5 is welded to the outer edge of the foil 4 and in fact shrinks up around the pallet to secure the stack 3 tightly in place thereon. Meanwhile air inside the hood 5 is sucked out by the blower 13 to ensure that no bubbles are formed.
- the clamps 11 are released and the conveyor chains 14 are advanced to move the shrink-wrapped palletized stack 3 off longitudinally, that is left-to-right as seen in FIG. 3.
Abstract
Description
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8816085[U] | 1988-12-24 | ||
DE8816085U DE8816085U1 (en) | 1988-12-24 | 1988-12-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
US5042235A true US5042235A (en) | 1991-08-27 |
Family
ID=6831200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/454,774 Expired - Fee Related US5042235A (en) | 1988-12-24 | 1989-12-21 | System for shrink-wrapping palletized goods |
Country Status (6)
Country | Link |
---|---|
US (1) | US5042235A (en) |
EP (1) | EP0376028B1 (en) |
AT (1) | ATE85572T1 (en) |
DE (2) | DE8816085U1 (en) |
DK (1) | DK168816B1 (en) |
ES (1) | ES2038394T3 (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5247783A (en) * | 1990-09-13 | 1993-09-28 | Develog, Reiner Hannen & Cie | System for wrapping palletized goods |
US5415518A (en) * | 1993-08-25 | 1995-05-16 | R.R. Donnelley & Sons Company | Automated method and system for loading book mail bundles onto a pallet |
WO2000044626A1 (en) * | 1999-01-28 | 2000-08-03 | MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung | Device for shrinking a shrink-wrap film |
FR2816587A1 (en) * | 2000-11-16 | 2002-05-17 | Thimon | Procedure for covering palleted load with thermo-shrink plastic uses warm air to inflate sleeve as heater descends and fastening bottom edge |
US6421983B1 (en) * | 1998-11-05 | 2002-07-23 | Kl-Lachenmeier A/S | Method and apparatus for shrinking a foil onto an object |
EP1378460A1 (en) * | 2002-07-02 | 2004-01-07 | Whirlpool Corporation | Packaging for chest freezers and method for its use |
US20060037285A1 (en) * | 2004-08-19 | 2006-02-23 | Cary Randall L | Bulk transportable container |
US20080216450A1 (en) * | 2006-03-27 | 2008-09-11 | Transfresh Corporation | Methods and apparatus for preserving pallet units of fresh perishables in modified atmosphere-containing bags |
US20100051618A1 (en) * | 2008-09-03 | 2010-03-04 | Dave Ours | Transportable container for bulk goods and method for forming the same |
US7921624B2 (en) | 2008-06-05 | 2011-04-12 | Kellogg Company | Unitary transporter base and shaper and slip frame former for forming a transportable container |
US20110185687A1 (en) * | 2010-01-29 | 2011-08-04 | Michels Frank Rolf | Apparatus for wrapping a stack of objects with a film |
US8104520B2 (en) | 2008-06-11 | 2012-01-31 | Kellogg Company | Gentle handling hopper and scrunched bag for filling and forming a transportable container |
US20120241343A1 (en) * | 2010-09-27 | 2012-09-27 | Felix Waldner Gmbh | Method for packaging a pack commodity, and package for a pack commodity |
US20130067861A1 (en) * | 2011-09-16 | 2013-03-21 | Owens Corning Intellectual Capital, Llc | Packaging to improve shelflife of insulation products |
US9126705B2 (en) | 2010-12-01 | 2015-09-08 | Kellogg Company | Transportable container for bulk goods and method for forming the same |
EP4119451A1 (en) * | 2021-07-16 | 2023-01-18 | MSK - Verpackungs-Systeme GmbH | Method for creating at least one free area in a casing made of shrink foil, preferably designed as a shrink hood, and forming device for carrying out a method for creating at least one free area in a casing consisting of shrink foil, preferably designed as a shrink hood |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4342490C2 (en) * | 1993-12-13 | 1996-09-26 | Lachenmeier Kurt Aps | Method and device for shrinking a film hood made of heat-shrinkable material, which is pulled over a load on a pallet |
ES2130024B1 (en) * | 1996-01-26 | 2000-01-16 | Mecanizacion Del Transporte Y | DEVICE AND PROCEDURE TO RETRACT A PLASTIC SHEET ON PALLETIZED GOODS. |
DE19803244C2 (en) * | 1998-01-28 | 2003-04-24 | Kurt Lachenmeier As Sonderborg | Method and device for packaging a good |
FR2850949B1 (en) | 2003-02-10 | 2005-10-21 | Thimon | DEVICE AND METHOD FOR PACKAGING A PALLETIZED LOAD USING A THERMORETRACTABLE PLASTIC FILM COVER |
DE102015122597A1 (en) * | 2015-12-22 | 2017-06-22 | Gebr. Heinemann SE & Co. KG | Method and device for tamper-evident sealing of packaged goods |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3508375A (en) * | 1968-07-25 | 1970-04-28 | Larry L Kaufman Co | Method and apparatus for covering a load on a pallet |
US3522688A (en) * | 1966-10-19 | 1970-08-04 | Alkor Oberlikon Plastic Gmbh | Method of enveloping a loaded pallet in a conforming plastic film |
US3581458A (en) * | 1968-02-07 | 1971-06-01 | Olov Erland Gustavsson | Method of shrinking a sleeve- or cap-shaped wrapping of heat-shrinkable plastic sheet surrounding a transport unit and an apparatus for carrying out the method |
US3621588A (en) * | 1968-10-10 | 1971-11-23 | Nuetro Hirsch & Co | Device for packaging piece goods on a base frame |
US3667598A (en) * | 1971-02-18 | 1972-06-06 | Weldotron Corp | Wrapped pallet load |
US4575989A (en) * | 1981-10-16 | 1986-03-18 | Msk-Verpackungs-Systeme Gmbh | Method and device for packaging palletized stacks of goods |
EP0205135A1 (en) * | 1985-06-14 | 1986-12-17 | MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung | Method for packaging stacked articles disposed on a pallet, and device for putting the method into operation |
EP0249534A1 (en) * | 1986-06-04 | 1987-12-16 | Newtec International | Method and apparatus for packaging a palletized load in a film of heat-shrinkable plastic material |
US4724658A (en) * | 1986-06-25 | 1988-02-16 | Mollers Maschinenfabrik Gmbh | Arrangement for sliding and shrinking a hood of shrinking foil over and onto a stack |
-
1988
- 1988-12-24 DE DE8816085U patent/DE8816085U1/de not_active Expired
-
1989
- 1989-12-09 EP EP89122755A patent/EP0376028B1/en not_active Expired - Lifetime
- 1989-12-09 AT AT89122755T patent/ATE85572T1/en not_active IP Right Cessation
- 1989-12-09 DE DE8989122755T patent/DE58903534D1/en not_active Expired - Lifetime
- 1989-12-09 ES ES198989122755T patent/ES2038394T3/en not_active Expired - Lifetime
- 1989-12-19 DK DK646189A patent/DK168816B1/en not_active IP Right Cessation
- 1989-12-21 US US07/454,774 patent/US5042235A/en not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3522688A (en) * | 1966-10-19 | 1970-08-04 | Alkor Oberlikon Plastic Gmbh | Method of enveloping a loaded pallet in a conforming plastic film |
US3581458A (en) * | 1968-02-07 | 1971-06-01 | Olov Erland Gustavsson | Method of shrinking a sleeve- or cap-shaped wrapping of heat-shrinkable plastic sheet surrounding a transport unit and an apparatus for carrying out the method |
US3508375A (en) * | 1968-07-25 | 1970-04-28 | Larry L Kaufman Co | Method and apparatus for covering a load on a pallet |
US3621588A (en) * | 1968-10-10 | 1971-11-23 | Nuetro Hirsch & Co | Device for packaging piece goods on a base frame |
US3667598A (en) * | 1971-02-18 | 1972-06-06 | Weldotron Corp | Wrapped pallet load |
US4575989A (en) * | 1981-10-16 | 1986-03-18 | Msk-Verpackungs-Systeme Gmbh | Method and device for packaging palletized stacks of goods |
EP0205135A1 (en) * | 1985-06-14 | 1986-12-17 | MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung | Method for packaging stacked articles disposed on a pallet, and device for putting the method into operation |
EP0249534A1 (en) * | 1986-06-04 | 1987-12-16 | Newtec International | Method and apparatus for packaging a palletized load in a film of heat-shrinkable plastic material |
US4724658A (en) * | 1986-06-25 | 1988-02-16 | Mollers Maschinenfabrik Gmbh | Arrangement for sliding and shrinking a hood of shrinking foil over and onto a stack |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5247783A (en) * | 1990-09-13 | 1993-09-28 | Develog, Reiner Hannen & Cie | System for wrapping palletized goods |
US5415518A (en) * | 1993-08-25 | 1995-05-16 | R.R. Donnelley & Sons Company | Automated method and system for loading book mail bundles onto a pallet |
US6421983B1 (en) * | 1998-11-05 | 2002-07-23 | Kl-Lachenmeier A/S | Method and apparatus for shrinking a foil onto an object |
WO2000044626A1 (en) * | 1999-01-28 | 2000-08-03 | MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung | Device for shrinking a shrink-wrap film |
US6837031B1 (en) | 1999-01-28 | 2005-01-04 | MSK-Verpackungss-Systeme Gesellschaft Mit Beschrankter Haftung | Device for shrinking a shrink-wrap film |
CZ297612B6 (en) * | 1999-01-28 | 2007-02-14 | MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung | Apparatus for shrinking heat shrinkable foil |
FR2816587A1 (en) * | 2000-11-16 | 2002-05-17 | Thimon | Procedure for covering palleted load with thermo-shrink plastic uses warm air to inflate sleeve as heater descends and fastening bottom edge |
EP1207109A1 (en) * | 2000-11-16 | 2002-05-22 | Société Thimon | Method and device applying and heat-sealing a hood in thermoplastic retractable material in order to obtain a waterproof palletized package |
EP1378460A1 (en) * | 2002-07-02 | 2004-01-07 | Whirlpool Corporation | Packaging for chest freezers and method for its use |
US20060037285A1 (en) * | 2004-08-19 | 2006-02-23 | Cary Randall L | Bulk transportable container |
WO2006023155A1 (en) * | 2004-08-19 | 2006-03-02 | Kellogg Company | Bulk transportable container |
US7284360B2 (en) | 2004-08-19 | 2007-10-23 | Kellogg Company | Bulk transportable container |
US7770366B2 (en) * | 2006-03-27 | 2010-08-10 | Transfresh Corporation | Systems for automatically sealing a plastic bag/enclosure over containers of perishables carried on a pallet |
US8024912B2 (en) * | 2006-03-27 | 2011-09-27 | Chiquita Brands, Llc | Methods for preserving pallet units of fresh perishables in modified atmosphere containing bags |
US20080216450A1 (en) * | 2006-03-27 | 2008-09-11 | Transfresh Corporation | Methods and apparatus for preserving pallet units of fresh perishables in modified atmosphere-containing bags |
US20100293893A1 (en) * | 2006-03-27 | 2010-11-25 | Macleod Richard F J | Methods and apparatus for preserving pallet units of fresh perishables in modifield atmosphere-containing bags |
US7921624B2 (en) | 2008-06-05 | 2011-04-12 | Kellogg Company | Unitary transporter base and shaper and slip frame former for forming a transportable container |
US8104520B2 (en) | 2008-06-11 | 2012-01-31 | Kellogg Company | Gentle handling hopper and scrunched bag for filling and forming a transportable container |
US20100051618A1 (en) * | 2008-09-03 | 2010-03-04 | Dave Ours | Transportable container for bulk goods and method for forming the same |
US8191341B2 (en) | 2008-09-03 | 2012-06-05 | Kellogg Company | Method for forming a transportable container for bulk goods |
US20110185687A1 (en) * | 2010-01-29 | 2011-08-04 | Michels Frank Rolf | Apparatus for wrapping a stack of objects with a film |
US8776486B2 (en) * | 2010-01-29 | 2014-07-15 | Msk-Verpackungs-Systeme Gmbh | Apparatus for wrapping a stack of objects with a film |
US20120241343A1 (en) * | 2010-09-27 | 2012-09-27 | Felix Waldner Gmbh | Method for packaging a pack commodity, and package for a pack commodity |
US9205964B2 (en) * | 2010-09-27 | 2015-12-08 | Felix Waldner Gmbh | Method for packaging a pack commodity, and package for a pack commodity |
US9856062B2 (en) | 2010-09-27 | 2018-01-02 | Felix Waldner Gmbh | Method for packaging a pack commodity, and package for a pack commodity |
US9126705B2 (en) | 2010-12-01 | 2015-09-08 | Kellogg Company | Transportable container for bulk goods and method for forming the same |
US20130067861A1 (en) * | 2011-09-16 | 2013-03-21 | Owens Corning Intellectual Capital, Llc | Packaging to improve shelflife of insulation products |
EP4119451A1 (en) * | 2021-07-16 | 2023-01-18 | MSK - Verpackungs-Systeme GmbH | Method for creating at least one free area in a casing made of shrink foil, preferably designed as a shrink hood, and forming device for carrying out a method for creating at least one free area in a casing consisting of shrink foil, preferably designed as a shrink hood |
Also Published As
Publication number | Publication date |
---|---|
EP0376028B1 (en) | 1993-02-10 |
DK168816B1 (en) | 1994-06-20 |
DK646189D0 (en) | 1989-12-19 |
DK646189A (en) | 1990-06-25 |
DE58903534D1 (en) | 1993-03-25 |
DE8816085U1 (en) | 1989-03-09 |
EP0376028A1 (en) | 1990-07-04 |
ATE85572T1 (en) | 1993-02-15 |
ES2038394T3 (en) | 1993-07-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: MSK-VERPACKUNGS-SYSTEME GESELLSCHAFT MIT BESCHRANK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:HANNEN, REINER W.;VERMEULEN, NORBERT;REEL/FRAME:005247/0402 Effective date: 19900202 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20030827 |